pub(super) const DRAIN_MAX_MESSAGES: usize = 1024;Expand description
Upper bound for the messages forwarded per drain after the process exited.
The output written before the exit is at most what the channels, the
STDIO_CHANNEL_SIZE of the stdio ones or
the OUTPUT_CHANNEL_SIZE of the
attach broadcast, and the pipe buffers hold. With the default pipe-max-size
of 1 MiB in 8 KiB reads, that is 128 messages per pipe, and small writes
read one by one do not fill a pipe of that size either, so this is well
above. It is a heuristic though, a process with CAP_SYS_RESOURCE can grow
its pipes further. More output stems from a grandchild which keeps the
pipe open and writing, which would otherwise keep the drain going forever.